Creda Oven Reflection - Model number 48197 or 48196?

Right, at the weekend the oven stopped working, isolated this as an element replacement as the fan was on but no heat coming through, replaced the element by going to a shop, taking the old one and buying what I think is a suitable replacement> Came back home put it all back in, now everytime I switch the oven on, you can have it on FAN, but once you switch the heat on it tripps out the whole electricty in the house. I've made sure that I have put the wires back on correctly, there is nothing else I could of down. If you could give me some advice it would be great.

Thanks